TPS22912C集成电路（IC）的配电开关负载驱动器规格书PDF中文资料

1 Features

1• Integrated Single Load Switch

• Four Pin Wafer-Chip-Scale Package (Nom)

– 0.9 mm × 0.9 mm, 0.5-mm Pitch, 0.5-mm

Height (YZV)

• Input Voltage Range: 1.4 V to 5.5 V low•

Low ON-Resistance

– rON = 60 mΩ at VIN = 5 V

– rON = 61 mΩ at VIN = 3.3 V

– rON = 74 mΩ at VIN = 1.8 V

– rON = 84 mΩ at VIN = 1.5 V

• 2-A Maximum Continuous Switch Current

• Low Threshold Control Input power•

Controlled Slew-rate

• Under-Voltage Lock Out

• Full-Time Reverse Current Protection

• Quick Output Discharge Transistor (TPS22913B/C

Devices)

2 Applications

• Notebook Computer and Ultrabook™

• Tablets and Set-Top-Boxes

• Portable Industrial / Medical Equipment

• Portable Media Players

• Point Of Sale Pins

• GPS Navigation Devices

• Digital Cameras

• Portable Instrumentation

• Smartphones / Wireless Handsets

3 Description

The TPS22910A, TPS22912C, and TPS22913B/C

are small, low rON load switches with controlled turn on. The device contains a P-channel MOSFET that

can operate over an input voltage range of 1.4 V to

5.5 V. The switch is controlled by an on/off input

(ON), which is capable of interfacing directly with low•

voltage GPIO control signals.

The TPS22910A, TPS22912C, and TPS22913B/C

devices provide reverse current protection in ON and

OFF states. An internal reverse voltage comparator

disables the power-switch when the output voltage

(VOUT) is driven higher than the input voltage (VIN), by

VRCP, to quickly (10 μs typ) stop the flow of current towards the input side of the switch. Reverse current

protection is always active, even when the power•

switch is disabled. Additionally, under-voltage lockout

(UVLO) protection turns the switch off if the input voltage is too low.

The TPS22913B/C contains a 150-Ω on-chip load

resistor for quick output discharge when the switch is turned off.

This family of devices have various slew rate options

to avoid inrush current (see Device Comparison

Table for details), are available in an ultra-small,

space-saving 4-pin WCSP packages, and are

characterized for operation over the free-air

temperature range of –40°C to 85°C.